52" WC trigger point maintains the manufacturer's safety tolerances for flue gas venting

and 1/8 HP at 125 VAC

the STT18A-600R features precision-machined internal components that ensure a drip-tight seal and reliable modulation in water-cooled condensers

you know these units are built for durability in Class I or Class II rated areas where standard actuators fail

5 MFD capacitor ensures lower energy consumption and reliable starting torque

Lennox 51M75 Limit Switch 319825-402 52" WC trigger point maintainsThe Lennox 51M75 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces and air handlers. This OEM Lennox replacement part operates with a fixed temperature range, featuring a 95 125F trip point with an automatic reset configuration. Engineered to monitor heat exchanger temperatures, the Lennox 51M75 prevents overheating by breaking the electrical circuit to the gas valve or blower motor if